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1 GNU C Library NEWS -- history of user-visible changes. 2011-10-29
2 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.15
10 * The following bugs are resolved with this release:
12 6779, 6783, 9696, 10709, 11589, 12403, 12847, 12868, 12852, 12874, 12885,
13 12892, 12907, 12922, 12935, 13007, 13021, 13067, 13068, 13090, 13092,
14 13114, 13118, 13123, 13134, 13138, 13150, 13179, 13192, 13268, 13291,
15 13335, 13337, 13344, 13358
17 * New program pldd to list loaded object of a process
18 Implemented by Ulrich Drepper.
20 * Add nss_db support back to glibc. No more dependency on Berkeley db
21 and support for initgroups lookups.
22 Implemented by Ulrich Drepper.
24 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
25 Contributed by HJ Lu.
27 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
28 Contributed by HJ Lu.
30 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
31 on x86-32 and x86-64.
32 Contributed by Liubov Dmitrieva.
34 * Optimized strchr and strrchr for SSE on x86-32.
35 Contributed by Liubov Dmitrieva.
37 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp for x86-64 and x86-32.
38 Contributed by Liubov Dmitrieva.
40 * New interfaces: scandirat, scandirat64
41 Implemented by Ulrich Drepper.
43 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
44 Implemented by Ulrich Drepper.
46 * nscd now also caches the netgroup database.
47 Implemented by Ulrich Drepper.
49 * Integrate libm with gcc's -ffinite-math-only option.
50 Implemented by Ulrich Drepper.
52 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
53 to math functions. Implemented by Ulrich Drepper.
55 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
56 Implemented by Ulrich Drepper.
57 \f
58 Version 2.14
60 * The following bugs are resolved with this release:
62 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
63 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
64 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
65 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
66 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
67 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
68 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
69 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
70 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
71 12795, 12811, 12813, 12814, 12841
73 * The RPC implementation in libc is obsoleted. Old programs keep working
74 but new programs cannot be linked with the routines in libc anymore.
75 Programs in need of RPC functionality must be linked against TI-RPC.
76 The TI-RPC implementation is IPv6 enabled and there are other benefits.
78 Visible changes of this change include (obviously) the inability to link
79 programs using RPC functions without referencing the TI-RPC library and the
80 removal of the RPC headers from the glibc headers.
81 Implemented by Ulrich Drepper.
83 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
84 syncfs, setns, sendmmsg
86 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
87 yue_HK, lij_IT, mhr_RU
89 * New encodings: CP770, CP771, CP772, CP773, CP774
91 * New program sotruss to trace calls through PLTs
92 Implemented by Ulrich Drepper.
94 * The malloc hook implementation is marked deprecated and will be removed
95 from the default implementation in the next version. The design never
96 worked ever since the introduction of threads. Even programs which do
97 not create threads themselves can use multiple threads created internally.
98 \f
99 Version 2.13
101 * The following bugs are resolved with this release:
103 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
104 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
105 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
106 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
107 12378, 12394, 12397
109 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
111 * POWER7 optimizations: memset, memcmp, strncmp
113 * New optimized string functions for x86-64: strnlen (SSE2),
114 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
115 Implemented by Ulrich Drepper.
116 \f
117 Version 2.12
119 * The following bugs are resolved with this release:
121 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
122 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
123 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
124 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
125 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
126 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
127 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
128 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
130 * New interfaces: pthread_getname_np, pthread_setname_np
132 * New Linux interface: recvmmsg
134 * STT_GNU_IFUNC implemented for Sparc by David Miller.
136 * The dynamic linker now recognizes supported ABI versions from the
137 EI_ABIVERSION field in the ELF header.
138 Implemented by Ulrich Drepper.
140 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
141 will not be used to fill in password fields in the passwd.byname replies.
142 Instead it is used to synthesize the shadow.byname table, should it be
143 missing. This is a useful mode in some installations involving Solaris.
144 Implemented by Ulrich Drepper.
146 * New locales: kok_IN, sq_MK, cv_RU
147 \f
148 Version 2.11
150 * The following bugs are resolved with this release:
152 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
153 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
154 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
155 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
156 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
157 10789, 10817, 10823, 10840, 10847
159 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
160 mkostemps64
161 Implemented by Ulrich Drepper.
163 * Checking version of longjmp added that fails if an uninitialized stack
164 frame would be created. Implemented by Ulrich Drepper.
166 * STT_GNU_IFUNC is now supported in static executables.
167 Implemented by H.J. Lu.
169 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
171 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
172 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
173 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
174 Contributed by H.J. Lu.
176 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
177 Implemented by Ulrich Drepper.
179 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
180 strstr, strcasestr.
181 Contributed by H.J. Lu.
183 * Support for fma instruction in AVX on x86-64.
184 Implemented by H.J. Lu and Ulrich Drepper.
186 * AVX support in x86-64 auditing support in ld.so.
187 Implemented by H.J. Lu.
189 * STB_GNU_UNIQUE support added.
190 Implemented by Ulrich Drepper.
192 * Implement second fallback mode for optimized DNS lookup for even more
193 broken environments. If two requests from the same port are not
194 handled correctly close the socket and open a new one before sending
195 the second request. The 'single-request-reopen' option in /etc/resolv.conf
196 can be used to select this mode right away, instead of rediscovering the
197 necessity is every process again.
198 Implemented by Ulrich Drepper.
200 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
201 Implemented by Adam Tkac.
203 * Optimized iconv conversions for S390x.
204 Implemented by Andreas Krebbel.
206 * Using condvars with PI mutexes is now more efficient due to kernel
207 support for requeueing to PI futexes. NPTL support added for x86-64.
208 Implemented by Ulrich Drepper.
210 * New locales: ps_AF, my_MM
211 \f
212 Version 2.10
214 * The following bugs are resolved with this release:
216 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
217 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
218 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
219 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
220 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
222 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
223 Implemented by Ulrich Drepper.
225 * New Linux interfaces: accept4, fallocate, fallocate64.
226 Implemented by Ulrich Drepper.
228 * Correct declarations of string function when used in C++ code. This
229 could lead to compile errors for invalid C++ code.
231 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
232 now in POSIX.
234 * New POSIX 2008 interface: psiginfo
235 Implemented by Ulrich Drepper.
237 * New ISO C++1x interfaces: quick_exit, at_quick_exit
238 Implemented by Ulrich Drepper.
240 * Support for selecting between multiple function definitions at runtime
241 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
243 * The libcrypt library can now use the hash function implementations in
244 NSS. Implemented by Ulrich Drepper.
246 * The malloc implementation can be compiled to be less memory efficient
247 but higher performing in multi-threaded programs.
248 Implemented by Ulrich Drepper.
250 * New locales: nan_TW@latin, ks_IN
252 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
253 Implemented by Ulrich Drepper.
255 * Extended printf hook support. It is possible to use user-defined types
256 and extend existing format specifiers.
257 Implemented by Ulrich Drepper.
259 * Handling for group shadow files has been added.
260 Implemented by Ulrich Drepper.
262 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
263 servers (the case, e.g., for some people using the built-in DNS
264 server in ADSL modems/routers). There is a once-per-process timeout
265 in case of a broken server. To avoid it, users can run nscd or put
266 'options single-request' in /etc/resolv.conf.
267 Implemented by Ulrich Drepper.
268 \f
269 Version 2.9
271 * The following bugs are resolved with this release:
273 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
274 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
275 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
276 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
277 6968, 6974, 6980, 6995, 7008, 7009, 7029
279 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
280 up at the same time. Implemented by Ulrich Drepper.
282 * TLS descriptors for LD and GD on x86 and x86-64.
283 Implemented by Alexandre Oliva.
285 * getaddrinfo now handles DCCP and UDPlite.
286 Implemented by Ulrich Drepper.
288 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
289 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
290 Implemented by Ulrich Drepper.
292 * New implementation of memmem, strstr, and strcasestr which is O(n).
293 Implemented by Eric Blake.
295 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
297 * Implement "e" option for popen to open file descriptor with the
298 close-on-exec flag set. Implemented by Ulrich Drepper.
300 * Implement "b" mode for fmemopen. In this mode writes writes don't
301 implicitly add a NUL byte and seeks from the end of the buffer really
302 use the buffer end, not the string length as the basis.
303 Implemented by Ulrich Drepper.
305 * Many functions, exported and internal, now atomically set the close-on-exec
306 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
308 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
309 Sinhala)
310 Implemented by Pravin Satpute.
312 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
313 \f
314 Version 2.8
316 * The following bugs are resolved with this release:
318 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
319 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
320 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
321 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
322 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
323 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
324 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
326 * New locales: bo_CN, bo_IN, shs_CA.
328 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
330 * Sorting rules for some Indian languages (Devanagari and Gujarati).
331 Implemented by Pravin Satpute.
333 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
335 * nscd caches now all timeouts for DNS entries
336 Implemented by Ulrich Drepper.
338 * nscd is more efficient and wakes up less often.
339 Implemented by Ulrich Drepper.
341 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
342 vdprintf, and obstack_vprintf.
343 Implemented by Jakub Jelinek.
345 * Faster memset for x86-64.
346 Implemented by Harsha Jagasia and H.J. Lu.
348 * Faster memcpy on x86.
349 Implemented by Ulrich Drepper.
351 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
352 Implemented by Ulrich Drepper.
354 * Faster sqrt and sqrtf implemention for some PPC variants.
355 Implemented by Stephen Munroe.
356 \f
357 Version 2.7
359 * The following bugs are resolved with this release:
361 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
362 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
363 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
364 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
365 5071, 5103, 5104, 5112, 5113, 5184, 5186
367 * More checking functions: fread, fread_unlocked, open*, mq_open.
368 Implemented by Jakub Jelinek and Ulrich Drepper.
370 * Extend fortification to C++. Implemented by Jakub Jelinek.
372 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
373 by not recognizing 'a' as a modifier when those specs are requested.
374 Implemented by Jakub Jelinek.
376 * PPC optimizations to math and string functions.
377 Implemented by Steven Munroe.
379 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
380 options to be passed. Implemented by Ulrich Drepper.
382 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
384 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
385 Implemented by Ulrich Drepper.
387 * Handle private futexes in the NPTL implementation.
388 Implemented by Jakub Jelinek and Ulrich Drepper.
390 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
391 Implemented by Roland McGrath and Ulrich Drepper.
393 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
395 * SHA-256 and SHA-512 based password encryption.
396 Implemented by Ulrich Drepper.
398 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
399 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
400 yo_NG.
402 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
403 Implemented by Ulrich Drepper.
404 \f
405 Version 2.6
407 * The following bugs are resolved with this release:
409 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
410 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
411 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
412 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
413 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
414 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
415 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
416 4702, 4858
418 * New Linux interfaces: epoll_pwait, sched_getcpu.
420 * New generic interfaces: strerror_l.
422 * nscd can now cache the services database. Implemented by Ulrich Drepper.
423 \f
424 Version 2.5
426 * The following bugs are resolved with this release:
428 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
429 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
430 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
431 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
432 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
433 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
434 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
435 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
436 3225, 3251, 3252, 3253, 3273
438 * For Linux, the sorting of addresses returned by getaddrinfo now also
439 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
440 Implemented by Ulrich Drepper.
442 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
443 Implemented by Ulrich Drepper.
445 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
447 * New iconv module for MIK. Contributed by Alexander Shopov.
449 * For sites with broken group and/or passwd database, the auto-propagate
450 option of nscd can prevent creating ID lookup entries from the results
451 of a name lookup and vice versa. This usually is no problem but some
452 site might have problems with the default behavior.
453 Implemented by Ulrich Drepper.
455 * Iterating over entire database in NIS can be slow. With the
456 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
457 to trade time for memory. The entire database will be read at once.
458 Implemented by Ulrich Drepper.
460 * The interfaces introduced in RFC 3542 have been implemented by
461 Ulrich Drepper.
463 * Support for the new ELF hash table format was added by Ulrich Drepper.
465 * Support for priority inheritance mutexes added by Jakub Jelinek and
466 Ulrich Drepper.
468 * Support for priority protected mutexes added by Jakub Jelinek.
470 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
471 or_IN, csb_PL, fy_NL, sr_ME.
472 \f
473 Version 2.4
475 * More overflow detection functions.
477 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
478 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
480 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
481 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
482 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
483 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
484 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
485 by Masahide Washizawa.
487 * It is now possible to install audit libraries for the dynamic linker using
488 LD_AUDIT. Implemented by Ulrich Drepper.
490 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
491 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
492 For a libc and libpthread that works well on Linux 2.4 kernels, we
493 recommend using the stable 2.3 branch.
495 * The new function open_wmemstream acts like open_memstream,
496 but uses a wchar_t wide character buffer.
498 * The new function ppoll is an improved version of poll, similar to pselect.
500 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
501 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
502 renameat, unlinkat, linkat, symlinkat, readlinkat.
504 * New Linux kernel system calls: unshare,
505 inotify_init, inotify_add_watch, inotify_rm_watch.
507 * The euidaccess function is now also known by the alias eaccess,
508 for compatibility with some other systems.
510 * Timezone data updated to 2006b version.
511 \f
512 Version 2.3.6
514 * The following bugs are resolved with this release:
516 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
517 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
518 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
519 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
520 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
521 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
523 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
525 * As of this release, GCC 4 can be used to compile the C Library.
527 * Timezone data updated to 2005m version.
528 \f
529 Version 2.3.5
531 * The following bugs are resolved with this release:
533 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
534 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
535 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
536 777, 787, 821, 822, 823, 825
538 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
539 \f
540 Version 2.3.4
542 * Support for RFC 3678. Real implementations exist only for Linux so far.
543 Implemented by Ulrich Drepper.
545 * nscd can now cache entries persistently. Expiring entries are reloaded.
546 For speedups the cache can be shared in memory with client processes.
547 Implemented by Ulrich Drepper.
549 * nscd can now perform SELinux checks.
550 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
552 * getaddrinfo queries are now cached. Canonical name lookup is performed
553 efficiently.
554 Implemented by Ulrich Drepper.
556 * The nothrow function attribute is used when headers are used by gcc when
557 compiling C code. This can avoid significant amounts of exception
558 handling data.
560 * The malloc functions perform more error checking and are stricter when
561 it comes to reacting on errors. The default action is to terminate
562 the process after showing an error message. Implemented by Ulrich Drepper.
564 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
565 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
567 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
568 namespaces using the new function dlmopen(). This feature is of course,
569 like most other dynamic loading functionality, not available in statically
570 linked applications. Implemented by Ulrich Drepper.
572 * Low-overhead boundary checking variants of string and some stdio functions
573 were added. These are to be used in conjunction with a gcc patch by
574 Jakub Jelinek which adds calls to these functions if possible.
575 Implemented by Jakub Jelinek and Ulrich Drepper.
577 * Old code for several operating systems and machine architectures that
578 have not been in working condition in a long time have been removed from
579 the main source tree maintained by the GNU C Library's maintainers.
580 These files are now reside in the separate `ports' source module
581 that is usable as an add-on when building the library.
582 \f
583 Version 2.3.3
585 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
586 interrogate the dynamic linker, compatible with the Solaris interface.
588 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
589 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
591 * getifaddrs now uses the netlink interface on Linux to get its information.
592 Implemented by Thorsten Kukuk.
594 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
595 Implemented by Ulrich Drepper.
597 * support for non-executable stacks on x86 has been added. Changes mostly
598 by Roland McGrath.
600 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
601 and Ulrich Drepper.
603 * getaddrinfo now performs destination address selection according to
604 RFC 3484.
605 \f
606 Version 2.3.2
608 * Thread-safe interfaces for many functions that access locale data
609 were added in version 2.3, but these features were omitted from NEWS.
610 Many functions have variants with an `_l' suffix that take a `locale_t'
611 object as a parameter rather than consulting the current locale.
612 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
613 create and maintain `locale_t' objects. Additionally, the new function
614 `uselocale' sets "the current locale" (as used by functions not so
615 parameterized) set for an individual thread. These features were added
616 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
618 * The functions getresuid, getresgid, setresuid, and setresgid, which
619 have long been available on Linux, are now declared in <unistd.h>
620 and are now also available on the Hurd.
622 * ELF thread-local storage support (TLS) now works on x86-64.
624 * The new dynamic string token $LIB is expanded in shared library names.
625 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
627 * Aldy Hernandez contributed complete software floating point support for
628 PowerPC machines with no FPU.
630 * fexecve is implemented on Linux.
632 * The `btowc' function should work at least twice as fast due to
633 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
635 * With approriate thread add-ons cancelable functions are now implemented
636 in libc.so as well. No need to call the function in libpthread. This
637 change allowed to finally disable the incorrect and expensive handling
638 of weak definition in ld.so.
640 * Yet more PLT entries in libc.so have been removed. We finally arrived
641 at the bare minimum. Startup times improved appropriately.
643 * Support for the new Linux/x86 system call interface was added. The
644 AT_SYSINFO auxiliary vector entry is recognized and handled.
645 \f
646 Version 2.3
648 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
649 charsets.
651 * iconv (the program and the interface) now accepts empty names (excluding
652 options like //TRANSLIT) to mean "use charset of current locale".
654 * localedef can now transliterate characters in strings which are not in
655 the provided charmap. The information from the input locale is used.
657 * Prelinking support was added for ELF targets. This requires additional
658 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
660 * Read-only stdio streams now use mmap to speed up operation by eliminating
661 copying and buffer underflows. To use add 'm' to the mode string of
662 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
664 * The malloc functions were completely rewritten by Wolfram Gloger based
665 on Doug Lea's malloc-2.7.0.c.
667 * Isamu Hasegawa contributed a completely new and POSIX-conformant
668 implementation of regex.
670 * Bruno Haible upgraded the iconv and locale implementation to support
671 Unicode 3.2.
673 * Contents of the LC_* and LANG environment variables in the CEN style are
674 not recognized anymore. It never was used. Change by Ulrich Drepper.
676 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
677 thread-local storage (TLS) ABI on some platforms.
678 Changes by Ulrich Drepper. SH support by Kaz Kojima.
680 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
681 EUC-JISX0213, and TSCII.
683 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
684 BSD-compatible interface for getting all network interface addresses.
685 Implementation for IPv4 by Roland McGrath.
687 * Loading of locale data is faster due to the introduction of a locale
688 archive. Implemented by Roland McGrath and Ulrich Drepper.
690 * Startup times are significantly reduced by not using exported functions
691 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
692 and Ulrich Drepper.
694 * Steven Munroe contributed a port to PowerPC64/Linux.
695 \f
696 Version 2.2.6
698 * The Hurd now uses the GNU libio implementation of stdio rather than the
699 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
701 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
702 with the same behavior as the Linux system call of the same name.
703 \f
704 Version 2.2.5
706 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
707 128-bit long double format.
709 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
710 IBM1161, and IBM1162 charsets.
712 * Andreas Jaeger contributed a port to x86-64/Linux.
714 * Peter Bruin contributed a port to PowerPC/Hurd.
716 * libc functions using I/O streams now can handle wide-oriented streams
717 as well.
719 * optimizations in the dynamic linker. Binaries created by recent binutils
720 versions start up quicker due to reduced time spent on relocations.
722 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
723 \f
724 Version 2.2.4
726 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
727 asinh, atanh, j0 for the 128-bit long double format.
729 * Bruno Haible updated all the code handling Unicode in some form to
730 support Unicode 3.1.
732 * Speed of regex for single-byte locales is back to previous levels.
733 Patch by Isamu Hasegawa.
735 * Alpha, SPARC, and IA-64 now also using floating stacks.
737 * Startup time of internationalized applications greatly improved through
738 iconv cache. Use iconvconfig to generate the cache file.
739 Contributed by Ulrich Drepper.
741 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
742 severe performance problems. Patch by David Mosberger.
744 * The Hurd port got a lot more functionality like AIO, various stdio
745 extensions, etc. Mainly done by Roland McGrath.
747 * mtrace can now lookup symbols in shared libraries.
748 \f
749 Version 2.2.3
751 * Intel's IA-64 math library is largely integrated. It provides fast and
752 accurate implementatations for most basic and standard math functions
753 in float, double, and long double format.
755 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
756 and asin for the 96-bit long double format and asin, log, tan for the
757 128-bit long double format.
759 * The beginning of a last-bit accurate math library by IBM Haifa were added.
760 The basic double functions exist today. Contributed by Abraham Ziv
761 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
762 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
764 * An asynchronous name lookup library was added. The interface is designed
765 after POSIX AIO. The proposal was circulated beforehand to get comments.
766 No negative ones came in. Implemented by Ulrich Drepper.
768 * Port to S390/64bit contributed by Martin Schwidefsky
769 <schwidefsky@de.ibm.com>.
771 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
772 of functions for Linux/IA-64.
774 * The RPC code is now thread safe. Threads can now use the same service
775 of different services at the same time. Patch by Eric Norum
776 <eric.norum@usask.ca> with some help by Ulrich Drepper.
778 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
779 family of functions for Linux/S390.
781 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
782 of functions for Linux/x86.
784 * Port to Linux/CRIS contributed by Axis Communications.
785 \f
786 Version 2.2.2
788 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
789 we can now check for namespace violations and missing declarations. The
790 result is that almost all headers are now Unix-compliant (as defined in
791 the upcoming XPG6). The negative side is that some programs might need
792 corrections, too, if they depend on the incorrect form of the headers in
793 previous versions which defined too many symbols and included too many
794 other headers.
796 * regex now handles multibyte character sets correctly.
797 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
799 * iconv (the program) does now conform to the upcoming XPG6 and handles
800 charmaps. Instead of the charset names the path of charmaps can be
801 provided and the conversion happens based on this data.
802 Contributed by Ulrich Drepper.
804 * The locale program now provides detailed information about the installed
805 locales. While
807 locale -a
809 only lists the names of the supported locales
811 locale -a --verbose
813 provides details such as country, language, and codeset name.
814 Contributed by Ulrich Drepper.
815 \f
816 Version 2.2.1
818 * The gencat program now parses the input file according to the charset
819 selected by the LC_CTYPE category. This is important for stateful
820 character sets. To make generating catalogs easier there is a way
821 to overwrite the charset selected by the locale: before the first
822 message or $ quote line the catalog can contain a line like
824 $ codeset=ISO-8859-2
826 to select the charset (ISO-8859-2 in this case).
828 Implemented by Shinya Hanataka and Ulrich Drepper.
830 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
831 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
832 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
834 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
835 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
837 * The LANGUAGE environment variable is now ignored unless the locale is
838 changed from the default "C" locale.
840 * The usual bug fixes.
841 \f
842 Version 2.2
844 * Greg McGary added runtime support for bounds checking using gcc's
845 new -fbounded-pointers option. ix86 target is complete. PowerPC
846 is in progress.
848 * Thorsten Kukuk added secure mode support to nscd.
850 * The Berkeley db libraries have been removed.
852 Related, the nss_db module is now in a separate package since it
853 obviously requires a database library being available.
855 * Wide character I/O streams implemented by Ulrich Drepper.
857 * Functions from the extended socket API added by Ulrich Drepper.
859 * Functions feenableexcept and fedisableexcept to control the
860 behaviour of individual exceptions have been added by Andreas Jaeger.
862 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
864 * The resolver code has been updated from bind 8.2.3-T5B which supports
865 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
866 and Mark Kettenis.
868 This change could in some situations effect backward compatibility. Since
869 now `_res' is a thread-local instead of a global variable, modifying it
870 in one thread does not have any effect in other threads.
872 The resolver library was also extended to allow IPv6 as the transport
873 protocol for the requests. This work was done by Stig Venaas.
875 * Compatibility code for K&R C compilers has been removed from the
876 header files. A ISO C compiler is needed to use the library
877 (conforming to either C89 or C99 standard).
879 * Complete rewrite of the localedef program to support multibyte character
880 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
881 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
882 Implemented by Ulrich Drepper.
884 Bruno Haible significantly improved the generation and use of the data
885 structures for the wide character tables.
887 * Plural handling in gettext implemented by Ulrich Drepper.
889 * The utmp daemon has been removed.
891 * The port to MIPS-Linux has been finished by Andreas Jaeger.
893 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
894 and Yutaka Niibe.
896 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
898 * POSIX barriers implemented by Kaz Kylheku.
900 * POSIX spawn function family implemented by Ulrich Drepper.
902 * POSIX spinlocks are now available.
904 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
906 * the configure option --enable-kernel=X.Y.Z allows to strip out
907 compatibility for kernel versions before X.Y.Z. This is currently only
908 implemented for Linux.
910 * the sockaddr_in6 structure changed. The IPv6 working group added a new
911 field sin6_scope_id. This means that all programs using IPv6 should be
912 recompiled. Don't expect binary compatibility with previous glibc
913 versions.
915 * various conversion modules for IBM character sets contributed by
916 Masahide Washizawa.
918 * IA-64 port by Jes Sorensen and HJ Lu.
920 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
921 Compiling the GNU C Library for Linux/ia64
922 ******************************************
924 Please refer to the file INSTALL in the same directory as you found
925 this file for general information about configuring and compiling
926 glibc.
928 For general inquiries about glibc under Linux/ia64 please use the
929 following mailing list linux-ia64@linuxia64.org or one of the relevant
930 glibc mailing lists.
932 Recommended Tools for Compilation
933 =================================
935 In order for glibc-2.2 to build correctly on the ia64 you need at
936 least the following versions of the GNU tools (the :
938 * The Cygnus toolchain snapshot for the ia64 as of August 4
939 including the provided set of patches. It is however recommend
940 you use the October 24 toolchain snapshot or a more recent version.
942 OR alternatively you can try the following (the Cygnus toolchain is
943 the recommended solution):
945 * GCC and binutils, GAS and GNU LD out of CVS from
946 sources.redhat.com as of August 28, 2000 or later. The CVS tree
947 may require special patches to work properly on the ia64.
949 Configuring and compiling GNU Libc for Linux/ia64
950 =================================================
952 The library requires Linux kernel version 2.4.0-test4-000728 or
953 later to funtion properly. Besides that it support for debug libraries
954 is currently untested. Hence the following options
955 are required for configuring the library:
957 --disable-debug --enable-kernel=2.4.0
959 It is also important that you make sure the library picks up the
960 appropriate kernel header files, if you do not have recent enough
961 kernel headers in /usr/src/linux/include, you should use the
962 --with-headers=<path> option to specify the location.
964 As an example I personally use the following options to configure
965 the library:
967 --disable-debug
968 --disable-cvs
969 --enable-kernel=2.4.0
970 --host=ia64-linux
971 --enable-add-ons=yes
972 --prefix=/usr
973 --with-headers=/home/jes/linux/include
976 Good luck
978 Jes Sorensen <jes@linuxcare.com>,
979 November 14th, 2000
980 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
981 \f
982 Version 2.1.3
984 * bug fixes
986 \f
987 Version 2.1.2
989 * bug fixes
991 \f
992 Version 2.1.1
994 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
996 * New xdr functions are added; some rpc functions are now 64bit clean.
998 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1000 * Fixed known incompatibilities with glibc 2.0.
1002 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1004 * Optimized a number of functions (especially the ELF dynamic loader).
1006 * Update timezone data files.
1008 * lots of charmaps corrections
1010 * some new locale definitions and charmaps
1012 \f
1013 Version 2.1
1015 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1016 conform to POSIX member type requirements. Symbol versions have been
1017 adjusted as needed within the library, and for direct use by applications,
1018 but there is potential for problems if third-party libraries use
1019 struct timeval as part of their interface. This does not present
1020 a problem for X and other "essential" system libraries.
1022 * An additional locale model to support C++ Standard Library locale
1023 model and probably more was implemented by Ulrich Drepper.
1025 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1026 symbol level.
1028 * Miles Bader provided the `argp' function family to support hierachical
1029 command line argument parsing, layered on top of getopt.
1031 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1033 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1034 numbers.
1036 * scanf recognizes the %a and %A format for scanning floating point numbers.
1038 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1039 information and interfaces for the available integer types.
1041 * about 130 new math functions were added to implement the ISO C9x math
1042 library.
1044 * the new header <complex.h> contains definitions of the complex math
1045 functions from ISO C 9X.
1047 * the new header <tgmath.h> defines generic macros to use complex or
1048 real valued functions.
1050 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1052 * Andreas Jaeger provided a test suite for the math library.
1054 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1056 * Ulrich Drepper added character set conversion functions (iconv).
1058 * Optimized string functions have been added.
1060 * The localedata addon is now part of glibc.
1062 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1064 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1065 daemon for NSS (nscd).
1067 Missing a better place here are some numbers on improvements. Under
1068 Linux 2.1.125 un-tar-ing the kernel sources takes
1070 user system wall
1072 using local files 12.19s 6.88s 22.91s
1074 using NIS 13.92s 8.91s 26.34s
1076 using NIS & nscd 10.37s 7.34s 25.30s
1078 using NIS+ 27.57s 30.37s 640.46s
1080 using NIS+ & nscd 10.25s 7.83s 26.51s
1082 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1084 Keep in mind that non-namelookup related operations dominate above times.
1085 It was just a common complain that using NIS+ unpacking the kernel is
1086 horribly slow.
1088 [1] The old nscd implementation is not available anymore since it was
1089 distributed with glibc up to version 2.0.98 and thus is now replaced.
1091 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1093 * Mark Kettenis provided a Hesiod NSS module.
1095 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1096 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1098 * rcmd can now handle netgroups (Dick Streefland).
1100 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1101 Bambrough.
1103 * Support for the IPv6 protocol has been added to the socket API, as per the
1104 latest draft standards.
1106 * Support for Linux 2.2 has been added.
1108 * Interface changes relative to the latest 2.0.x release:
1109 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1110 addseverity NEW: Unix98
1111 alphasort64 NEW: LFS
1112 argp_err_exit_status NEW: argp, GNU ext
1113 argp_error NEW: argp, GNU ext
1114 argp_failure NEW: argp, GNU ext
1115 argp_help NEW: argp, GNU ext
1116 argp_parse NEW: argp, GNU ext
1117 argp_program_bug_address NEW: argp, GNU ext
1118 argp_program_version NEW: argp, GNU ext
1119 argp_program_version_hook NEW: argp, GNU ext
1120 argp_state_help NEW: argp, GNU ext
1121 argp_usage NEW: argp, GNU ext
1122 authdes_create NEW: Secure RPC
1123 authdes_getucred NEW: Secure RPC
1124 authdes_pk_create NEW: Secure RPC
1125 backtrace NEW: GNU ext.
1126 backtrace_symbols NEW: GNU ext.
1127 backtrace_symbols_fd NEW: GNU ext.
1128 cacos NEW: ISO C 9x
1129 cacosf NEW: ISO C 9x
1130 cacosh NEW: ISO C 9x
1131 cacoshf NEW: ISO C 9x
1132 cacoshl NEW: ISO C 9x
1133 cacosl NEW: ISO C 9x
1134 capget NEW: kernel
1135 capset NEW: kernel
1136 carg NEW: ISO C 9x
1137 cargf NEW: ISO C 9x
1138 cargl NEW: ISO C 9x
1139 casin NEW: ISO C 9x
1140 casinf NEW: ISO C 9x
1141 casinh NEW: ISO C 9x
1142 casinhf NEW: ISO C 9x
1143 casinhl NEW: ISO C 9x
1144 casinl NEW: ISO C 9x
1145 catan NEW: ISO C 9x
1146 catanf NEW: ISO C 9x
1147 catanh NEW: ISO C 9x
1148 catanhf NEW: ISO C 9x
1149 catanhl NEW: ISO C 9x
1150 catanl NEW: ISO C 9x
1151 cbc_crypt NEW: Secure RPC
1152 ccos NEW: ISO C 9x
1153 ccosf NEW: ISO C 9x
1154 ccosh NEW: ISO C 9x
1155 ccoshf NEW: ISO C 9x
1156 ccoshl NEW: ISO C 9x
1157 ccosl NEW: ISO C 9x
1158 cexp NEW: ISO C 9x
1159 cexpf NEW: ISO C 9x
1160 cexpl NEW: ISO C 9x
1161 cimag NEW: ISO C 9x
1162 cimagf NEW: ISO C 9x
1163 cimagl NEW: ISO C 9x
1164 clearerr_locked REMOVED
1165 clntunix_create NEW: sunrpc ext
1166 clog NEW: ISO C 9x
1167 clog10 NEW: ISO C 9x
1168 clog10f NEW: ISO C 9x
1169 clog10l NEW: ISO C 9x
1170 clogf NEW: ISO C 9x
1171 clogl NEW: ISO C 9x
1172 conj NEW: ISO C 9x
1173 conjf NEW: ISO C 9x
1174 conjl NEW: ISO C 9x
1175 cpow NEW: ISO C 9x
1176 cpowf NEW: ISO C 9x
1177 cpowl NEW: ISO C 9x
1178 cproj NEW: ISO C 9x
1179 cprojf NEW: ISO C 9x
1180 cprojl NEW: ISO C 9x
1181 creal NEW: ISO C 9x
1182 crealf NEW: ISO C 9x
1183 creall NEW: ISO C 9x
1184 creat64 NEW: LFS
1185 csin NEW: ISO C 9x
1186 csinf NEW: ISO C 9x
1187 csinh NEW: ISO C 9x
1188 csinhf NEW: ISO C 9x
1189 csinhl NEW: ISO C 9x
1190 csinl NEW: ISO C 9x
1191 csqrt NEW: ISO C 9x
1192 csqrtf NEW: ISO C 9x
1193 csqrtl NEW: ISO C 9x
1194 ctan NEW: ISO C 9x
1195 ctanf NEW: ISO C 9x
1196 ctanh NEW: ISO C 9x
1197 ctanhf NEW: ISO C 9x
1198 ctanhl NEW: ISO C 9x
1199 ctanl NEW: ISO C 9x
1200 des_setparity NEW: Secure RPC
1201 ecb_crypt NEW: Secure RPC
1202 endutxent NEW: Unix98
1203 exp10 NEW: ISO C 9x
1204 exp10f NEW: ISO C 9x
1205 exp10l NEW: ISO C 9x
1206 exp2 NEW: ISO C 9x
1207 exp2f NEW: ISO C 9x
1208 exp2l NEW: ISO C 9x
1209 fattach NEW: STREAMS
1210 fdetach NEW: STREAMS
1211 fdim NEW: ISO C 9x
1212 fdimf NEW: ISO C 9x
1213 fdiml NEW: ISO C 9x
1214 feclearexcept NEW: ISO C 9x
1215 fegetenv NEW: ISO C 9x
1216 fegetexceptflag NEW: ISO C 9x
1217 fegetround NEW: ISO C 9x
1218 feholdexcept NEW: ISO C 9x
1219 feof_locked REMOVED
1220 feraiseexcept NEW: ISO C 9x
1221 ferror_locked REMOVED
1222 fesetenv NEW: ISO C 9x
1223 fesetexceptflag NEW: ISO C 9x
1224 fesetround NEW: ISO C 9x
1225 fetestexcept NEW: ISO C 9x
1226 feupdateenv NEW: ISO C 9x
1227 fflush_locked REMOVED
1228 ffsl NEW: GNU ext.
1229 ffsll NEW: GNU ext.
1230 fgetpos64 NEW: LFS
1231 fgets_unlocked NEW: GNU ext.
1232 fileno_locked REMOVED
1233 fma NEW: ISO C 9x
1234 fmaf NEW: ISO C 9x
1235 fmal NEW: ISO C 9x
1236 fmax NEW: ISO C 9x
1237 fmaxf NEW: ISO C 9x
1238 fmaxl NEW: ISO C 9x
1239 fmin NEW: ISO C 9x
1240 fminf NEW: ISO C 9x
1241 fminl NEW: ISO C 9x
1242 fmtmsg NEW: Unix98
1243 fopen64 NEW: LFS
1244 fputc_locked REMOVED
1245 fputs_unlocked NEW: GNU ext.
1246 fread_unlocked NEW: GNU ext.
1247 freopen64 NEW: LFS
1248 fseeko NEW: Unix98
1249 fsetpos64 NEW: LFS
1250 fstatfs64 NEW: LFS
1251 fstatvfs NEW: Unix98
1252 fstatvfs64 NEW: LFS
1253 ftello NEW: Unix98
1254 ftello64 NEW: LFS
1255 ftruncate64 NEW: LFS
1256 ftw64 NEW: LFS
1257 fwrite_unlocked NEW: GNU ext.
1258 gai_strerror NEW: IPv6
1259 gamma_r REMOVED
1260 gammaf_r REMOVED
1261 gammal_r REMOVED
1262 getchar_locked REMOVED
1263 getdate NEW: Unix98
1264 getdate_err NEW: Unix98
1265 getdate_r NEW: GNU ext.
1266 getmsg NEW: STREAMS
1267 getnameinfo NEW: IPv6
1268 getnetname NEW: Secure RPC
1269 getpmsg NEW: STREAMS
1270 getpt NEW: Unix98 PTY
1271 getrlimit64 NEW: LFS
1272 getutxent NEW: Unix98
1273 getutxid NEW: Unix98
1274 getutxline NEW: Unix98
1275 glob64 NEW: GNU ext.
1276 globfree64 NEW: GNU ext.
1277 gnu_get_libc_release NEW: GNU ext.
1278 gnu_get_libc_version NEW: GNU ext.
1279 grantpt NEW: Unix98 PTY
1280 host2netname NEW: Secure RPC
1281 iconv NEW: iconv
1282 iconv_close NEW: iconv
1283 iconv_open NEW: iconv
1284 if_freenameindex NEW: IPv6
1285 if_indextoname NEW: IPv6
1286 if_nameindex NEW: IPv6
1287 if_nametoindex NEW: IPv6
1288 in6addr_any NEW: IPv6
1289 in6addr_loopback NEW: IPv6
1290 inet6_isipv4mapped NEW: IPv6
1291 isastream NEW: STREAMS
1292 iswblank NEW: GNU ext.
1293 key_decryptsession NEW: Secure RPC
1294 key_decryptsession_pk NEW: Secure RPC
1295 key_encryptsession NEW: Secure RPC
1296 key_encryptsession_pk NEW: Secure RPC
1297 key_gendes NEW: Secure RPC
1298 key_get_conv NEW: Secure RPC
1299 key_secretkey_is_set NEW: Secure RPC
1300 key_setnet NEW: Secure RPC
1301 key_setsecret NEW: Secure RPC
1302 llrint NEW: ISO C 9x
1303 llrintf NEW: ISO C 9x
1304 llrintl NEW: ISO C 9x
1305 llround NEW: ISO C 9x
1306 llroundf NEW: ISO C 9x
1307 llroundl NEW: ISO C 9x
1308 log2 NEW: ISO C 9x
1309 log2f NEW: ISO C 9x
1310 log2l NEW: ISO C 9x
1311 lrint NEW: ISO C 9x
1312 lrintf NEW: ISO C 9x
1313 lrintl NEW: ISO C 9x
1314 lround NEW: ISO C 9x
1315 lroundf NEW: ISO C 9x
1316 lroundl NEW: ISO C 9x
1317 lseek64 NEW: LFS
1318 makecontext NEW: Unix98
1319 mempcpy NEW: GNU ext.
1320 mmap64 NEW: LFS
1321 moncontrol REMOVED
1322 modify_ldt NEW: kernel
1323 nan NEW: ISO C 9x
1324 nanf NEW: ISO C 9x
1325 nanl NEW: ISO C 9x
1326 nearbyint NEW: ISO C 9x
1327 nearbyintf NEW: ISO C 9x
1328 nearbyintl NEW: ISO C 9x
1329 netname2host NEW: Secure RPC
1330 netname2user NEW: Secure RPC
1331 nexttoward NEW: ISO C 9x
1332 nexttowardf NEW: ISO C 9x
1333 nexttowardl NEW: ISO C 9x
1334 nftw NEW: Unix98
1335 nftw64 NEW: LFS
1336 open64 NEW: LFS
1337 passwd2des NEW: Secure RPC
1338 pow10 NEW: GNU ext.
1339 pow10f NEW: GNU ext.
1340 pow10l NEW: GNU ext.
1341 pread NEW: Unix98
1342 pread64 NEW: LFS
1343 printf_size NEW: GNU ext.
1344 printf_size_info NEW: GNU ext.
1345 profil_counter REMOVED
1346 pthread_mutexattr_getkind_np REPLACED
1347 pthread_mutexattr_setkind_np REPLACED
1348 ptsname NEW: Unix98 PTY
1349 ptsname_r NEW: Unix98 PTY
1350 putc_locked REMOVED
1351 putchar_locked REMOVED
1352 putgrent NEW: GNU ext.
1353 putmsg NEW: STREAMS
1354 putpmsg NEW: STREAMS
1355 pututxline NEW: Unix98
1356 pwrite NEW: Unix98
1357 pwrite64 NEW: LFS
1358 readdir64 NEW: LFS
1359 readdir64_r NEW: LFS
1360 remquo NEW: ISO C 9x
1361 remquof NEW: ISO C 9x
1362 remquol NEW: ISO C 9x
1363 round NEW: ISO C 9x
1364 roundf NEW: ISO C 9x
1365 roundl NEW: ISO C 9x
1366 rtime NEW: GNU ext.
1367 scalbln NEW: ISO C 9x
1368 scalblnf NEW: ISO C 9x
1369 scalblnl NEW: ISO C 9x
1370 scandir64 NEW: LFS
1371 sendfile NEW: kernel
1372 setcontext NEW: Unix98
1373 setrlimit64 NEW: LFS
1374 setutxent NEW: Unix98
1375 sighold NEW: Unix98
1376 sigignore NEW: Unix98
1377 sigqueue NEW: POSIX.1b
1378 sigrelse NEW: Unix98
1379 sigset NEW: POSIX.1b
1380 sigtimedwait NEW: POSIX.1b
1381 sigwaitinfo NEW: POSIX.1b
1382 sincos NEW: GNU ext.
1383 sincosf NEW: GNU ext.
1384 sincosl NEW: GNU ext.
1385 statfs64 NEW: LFS
1386 statvfs NEW: Unix98
1387 statvfs64 NEW: LFS
1388 strcasestr NEW: GNU ext.
1389 strtoimax NEW: ISO C 9x
1390 strtoumax NEW: ISO C 9x
1391 strverscmp NEW: GNU ext.
1392 svcauthdes_stats NEW: Secure RPC
1393 svcunix_create NEW: sunrpc etx
1394 svcunixfd_create NEW: sunrpc ext
1395 swapcontext NEW: Unix98
1396 tcgetsid NEW: Unix98 PTY
1397 tdestroy NEW: GNU ext.
1398 tgamma NEW: ISO C 9x
1399 tgammaf NEW: ISO C 9x
1400 tgammal NEW: ISO C 9x
1401 tmpfile64 NEW: LFS
1402 trunc NEW: ISO C 9x
1403 truncate64 NEW: LFS
1404 truncf NEW: ISO C 9x
1405 truncl NEW: ISO C 9x
1406 umount2 NEW: kernel
1407 unlockpt NEW: Unix98 PTY
1408 updwtmpx NEW: Unix98
1409 user2netname NEW: Secure RPC
1410 utmpxname NEW: Unix98
1411 versionsort NEW: GNU ext.
1412 versionsort64 NEW: GNU ext.
1413 waitid NEW: Unix98
1414 wcscasecmp NEW: GNU ext.
1415 wcsncasecmp NEW: GNU ext.
1416 wcsnlen NEW: GNU ext.
1417 wcstoimax NEW: ISO C 9x
1418 wcstoll NEW: ISO C 9x
1419 wcstoull NEW: ISO C 9x
1420 wcstoumax NEW: ISO C 9x
1421 wcswcs NEW: Unix98
1422 wordexp NEW: POSIX.2
1423 wordfree NEW: POSIX.2
1424 write_profiling REMOVED
1425 xdecrypt NEW: Secure RPC
1426 xdr_authdes_cred NEW: Secure RPC
1427 xdr_authdes_verf NEW: Secure RPC
1428 xdr_cryptkeyarg NEW: Secure RPC
1429 xdr_cryptkeyarg2 NEW: Secure RPC
1430 xdr_cryptkeyres NEW: Secure RPC
1431 xdr_getcredres NEW: Secure RPC
1432 xdr_key_netstarg NEW: Secure RPC
1433 xdr_key_netstres NEW: Secure RPC
1434 xdr_keybuf NEW: Secure RPC
1435 xdr_keystatus NEW: Secure RPC
1436 xdr_netnamestr NEW: Secure RPC
1437 xdr_sizeof NEW: Secure RPC
1438 xdr_unixcred NEW: sunrpc ext
1439 xencrypt NEW: Secure RPC
1440 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1441 \f
1442 Version 2.0.6
1444 * more bug fixes
1446 \f
1447 Version 2.0.5
1449 * more bug fixes
1451 * inet_ntoa is thread-safe
1453 * updwtmp is moved from libutil to libc
1455 * rewrite of cbrt function
1457 * update of timezone data
1458 \f
1459 Version 2.0.4
1461 * more bug fixes
1462 \f
1463 Version 2.0.3
1465 * more bug fixes
1466 \f
1467 Version 2.0.2
1469 * more bug fixes
1471 * add atoll function
1473 * fix complex problems in Berkeley DB code
1475 * fix math functions
1476 \f
1477 Version 2.0.1
1479 * fixed lots of header problems (especially Linux/GNU specific)
1481 * dynamic loader preserves all registers
1483 * Roland McGrath provided support for handling of auxiliary objects in
1484 the ELF dynamic loader.
1486 * support for parallel builds is improved
1487 \f
1488 Version 2.0
1490 * GNU extensions are no longer declared by default. To enable them you
1491 must define the macro `_GNU_SOURCE' in your program or compile with
1492 `-D_GNU_SOURCE'.
1494 * The library has changed from using GNU ld symbol aliases to using weak
1495 symbols where available. The ELF object file format supports weak
1496 symbols; GNU ld also supports weak symbols in the a.out format. (There
1497 is also now support for other GNU ld extensions in ELF. Use the
1498 `--with-elf' option to configure to indicate you have ELF, and
1499 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1500 of many files which contained only symbol aliases, reducing the size of
1501 the source and the compiled library; many other files were renamed to
1502 less cryptic names previously occupied by the symbol alias files.
1503 There is a new header file <elf.h> for programs which operate on
1504 files in the ELF format.
1506 * Converted to Autoconf version 2, so `configure' has more options.
1507 Run `configure --help' to see the details.
1509 * The library can now be configured to build profiling, highly-optimized
1510 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1511 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1512 `configure' enable building these extra libraries. The shared library is
1513 built by default when using both ELF and GNU ld. When shared libraries
1514 are enabled, the new library `-ldl' is available for arbitrary run-time
1515 loading of shared objects; its interface is defined in <dlfcn.h>. The
1516 new header file <link.h> gives access to the internals of the run-time
1517 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1518 application of same name on other systems and it provides information
1519 about dynamically linked binaries.
1521 * The C library now provides the run-time support code for profiling
1522 executables compiled with `-pg'. Programs can control the profiling code
1523 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1524 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1525 the support for this file format was contributed by David Mosberger-Tang.
1527 * The math code has been replaced with a math library based on fdlibm from
1528 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1529 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1530 functions. The math functions now reside in a separate library, so
1531 programs using them will need to use `-lm' their linking commands.
1533 * John C. Bowman contributed optimized ix87 assembler inline functions.
1535 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1536 mechanism similar to that found in Solaris 2. This is now used for the
1537 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1538 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1539 file controls what services are used for each individual database. This
1540 works by loading shared libraries with names specified in `nsswitch.conf',
1541 so service modules can be changed or added at any time without even
1542 relinking any program. Currently there are the file, db, and NIS based
1543 NSS services available.
1545 * The new functions `strtoq' and `strtouq' parse integer values from
1546 strings, like `strtol' and `strtoul', but they return `long long int' and
1547 `unsigned long long int' values, respectively (64-bit quantities).
1549 * The new functions `strtof' and `strtold' parse floating-point values from
1550 strings, like `strtod', but they return `float' and `long double' values,
1551 respectively (on some machines `double' and `long double' are the same).
1553 * Ulrich Drepper has contributed new implementations of the floating-point
1554 printing and reading code used in the `printf' family of functions and
1555 `strtod', `strtof', and `strtold'. These new functions are perfectly
1556 accurate, and much faster than the old ones.
1558 * The implementation of the POSIX locale model was completely rewritten by
1559 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1560 to compile the POSIX locale definition.
1562 * The former dummy implementations of the strcoll and strxfrm function are
1563 now replaced by fully functional code contributed by Ulrich Drepper. The
1564 collation information comes from the POSIX locale definitions.
1566 * The new header <langinfo.h> defines an interface for accessing
1567 various locale-dependent data (using the locale chosen with `setlocale').
1569 * Ulrich Drepper has contributed a new suite of functions for operation on
1570 wide-character and multibyte-character strings, in <wchar.h>;
1571 and classification and case conversion of wide characters, in <wctype.h>.
1572 These new functions are conforming to the ISO C, Amendement 1 specification.
1574 * There is now a second implementation of the standard I/O library available.
1575 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1576 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1578 * You can now use positional parameter specifications in format strings
1579 for the `printf' and `scanf' families of functions. For example,
1580 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1581 ``Number 6, Mr Jones''. This is mainly useful when providing different
1582 format strings for different languages, whose grammars may dictate
1583 different orderings of the values being printed. To support this
1584 feature, the interface for `register_printf_handler' has changed; see
1585 the header file <printf.h> for details.
1587 * The `printf' and `scanf' families of functions now understand a new
1588 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1589 to group numbers as indicated by the locale; for `scanf' and friends, this
1590 says to accept as valid only a number with all the proper grouping
1591 separators in the right places. In the default "C" locale, numbers are
1592 not grouped; but locales for specific countries will define the usual
1593 conventions (i.e. separate thousands with `,' in the US locale).
1595 * The pgrp functions have been regularized, slightly incompatibly but much
1596 less confusingly. The core functions are now `getpgid' and `setpgid',
1597 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1598 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1599 provided for compatibility. There is no longer an incompatible `getpgrp'
1600 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1602 * The new header file <fts.h> and suite of functions simplify programs that
1603 operate on directory trees. This code comes from 4.4 BSD.
1605 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1606 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1607 NSS scheme used in glibc.
1609 * There is a new malloc debugging hook `__memalign_hook'.
1611 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1612 `unsigned int' in <sys/types.h>. These are for compatibility only and
1613 their use is discouraged.
1615 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1616 done differently, so that it works even without GNU ld.
1618 * New function `euidaccess' checks allowed access to a file like `access',
1619 but using the effective IDs instead of the real IDs.
1621 * The time zone data files have been updated for the latest and greatest
1622 local time conventions of the countries of the world.
1624 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1625 see <dirent.h>.
1627 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1628 for formatting floating-point numbers. They are provided only for
1629 compatibility; new programs should use `sprintf' instead. There are
1630 also equivalent function for the `long double' floating-point type and
1631 all functions also exist in a reentrant form.
1633 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1634 functions for maintaining the login-record files (primarily of use to
1635 system programs such as `login'), and convenient functions for
1636 allocating and initializing a pseudo-terminal (pty) device.
1638 * Ulrich Drepper has contributed new support for System V style
1639 shared memory and IPC on systems that support it.
1641 * Ulrich Drepper has contributed several miscellaneous new functions found
1642 in System V: The `hsearch' family of functions provide an effective
1643 implementation of hash tables; `a64l' and `l64a' provide a very simple
1644 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1645 number generator.
1647 * Ulrich Drepper has contributed new reentrant counterparts for the
1648 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1650 * Ulrich Drepper has contributed new, highly-optimized versions of several
1651 string functions for the i486/Pentium family of processors.
1653 * Ulrich Drepper has updated the Linux-specific code, based largely
1654 on work done in Hongjiu Lu's version of GNU libc for Linux.
1655 The GNU library now supports Linux versions 2.0.10 and later,
1656 using the ELF object file format (i[3456]86-*-linux).
1658 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1660 * David Mosberger-Tang and Richard Henderson have ported the C library
1661 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1662 dynamic linking support for ELF/Alpha.
1664 * Richard Henderson contributed several Alpha optimized assembler function
1665 for arithmetic and string handling.
1667 * Ulrich Drepper has contributed a new set of message catalog functions to
1668 support multiple languages using the <libintl.h> interface, for use with
1669 his new package GNU gettext. Translation volunteers have contributed
1670 catalogs of the library's messages in Spanish, German, and Korean.
1672 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1673 program and the `catgets' function for reading the catalog files it
1674 creates. (The <libintl.h> interface is preferred; we include the
1675 <nl_types.h> interface using `catgets' only for source compatibility with
1676 programs already written to use it.)
1678 * New header file <values.h> gives SVID-compatible names for <limits.h>
1679 constants.
1681 * Various new macros, declarations, and small header files for compatibility
1682 with 4.4 BSD.
1684 * New function `group_member' is a convenient way to check if a process has
1685 a given effective group ID.
1687 * When using GCC 2.7 and later, the socket functions are now declared in a
1688 special way so that passing an argument of type `struct sockaddr_in *',
1689 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1690 `struct sockaddr *' type, does not generate a type-clash warning.
1692 * New function `error' declared in header file <error.h> is a convenient
1693 function for printing error messages and optionally exiting; this is the
1694 canonical function used in GNU programs. The new functions `err', `warn',
1695 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1696 doing the same thing.
1698 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1699 POSIX.2 `glob' function to do ~ and {...} expansion.
1701 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1702 `clearenv' which is used in POSIX.9 is also available.
1704 * New function `getsid' returns session ID number on systems that support it.
1706 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1707 files <db.h> and <mpool.h> provide a rich set of functions for several
1708 types of simple databases stored in memory and in files, and <ndbm.h> is
1709 an old `ndbm'-compatible interface using the `db' functions. Link with
1710 `-ldb' to get these functions.
1712 * New macro `strdupa' copies a string like `strdup', but uses local stack
1713 space from `alloca' instead of dynamic heap space from `malloc'.
1715 * New function `strnlen' is like `strlen' but searches only a given maximum
1716 number of characters for the null terminator. `stpncpy', `strndup' and
1717 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1718 function.
1720 * New function `statfs' in header <sys/statfs.h>.
1722 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1723 provide convenient functions for operating on blocks of null-terminated
1724 strings.
1726 * A new suite of functions in <utmp.h> handle all the details of reading
1727 and writing the utmp file.
1729 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1730 Thorsten Kukuk.
1732 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1733 completely POSIX compliant and also implemented the extended functionality
1734 to handle alternate digit representation and alternate era date formats.
1736 * Ulrich Drepper provided an implementation of the `strptime' function
1737 defined in XPG4.2 which transforms a string into a `struct tm' value.
1739 * Paul Eggert provided the tzselect shell script as part of the timezone
1740 code. The shell script makes it easy to select the correct timezone
1741 specification.
1743 * The implementation of the malloc family of functions is completely replaced
1744 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1745 The implementation uses the mmap function (if available) and it is
1746 optimized for the use in multi threaded programs.
1748 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1749 functions. This new functionality is usable by specifying a special
1750 salt string and it is compatible with implementation on *BSD systems.
1752 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1753 `getsubopt' to handle second level command line options, `bsd_signal'
1754 to access BSD style `signal' functionality, the obsolete `regexp' style
1755 expression matcher.
1757 * the `lchown' function is available on system which support this
1758 functionality.
1760 * The implementation of the shadow password handling function was contributed
1761 by Ulrich Drepper.
1763 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1765 * POSIX.1g support was added. The <sys/select.h> header is available,
1766 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1767 implementation of `getaddrinfo'.
1768 \f
1769 Version 1.09
1771 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1773 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1774 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1776 * The new function `daemon' from 4.4 BSD is useful for server programs that
1777 want to put themselves in the background.
1779 * Joel Sherrill has contributed support for several standalone boards that
1780 run without an operating system.
1782 * `printf', `scanf' and friends now accept a `q' type modifier for long
1783 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1785 * All of the code taken from BSD (notably most of the math and networking
1786 routines) has been updated from the BSD 4.4-Lite release.
1788 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1790 * The new functions `getdomainname' and `setdomainname' fetch or change the
1791 YP/NIS domain name. These are system calls which exist on systems which
1792 have YP (aka NIS).
1794 * The time zone data files have been updated for the latest international
1795 conventions.
1797 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1798 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1799 \f
1800 Version 1.08
1802 * The C library now includes support for Sun RPC, from Sun's free
1803 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1804 are included. (There is still no support for YP.)
1806 * Tom Quinn has contributed a port of the C library to SGI machines running
1807 Irix 4 (mips-sgi-irix4).
1809 * The new `lockf' function is a simplified interface to the locking
1810 facilities of `fcntl', included for compatibility.
1812 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1814 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1816 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1817 compatibility.
1819 * The error message printed by `assert' for a failed assertion now includes
1820 the name of the program (if using GNU ld) and the name of the calling
1821 function (with versions of GCC that support this).
1823 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1825 * The library now includes the <sys/mman.h> header file and memory
1826 management functions `mmap', `munmap', `mprotect', `msync', and
1827 `madvise', on systems that support those facilities.
1829 * The interface for `mcheck' has changed slightly: the function called to
1830 abort the program when an allocation inconsistency is detected now takes
1831 an argument that indicates the type of failure. The new function
1832 `mprobe' lets you request a consistency check for a particular block at
1833 any time (checks are normally done only when you call `free' or `realloc'
1834 on a block).
1836 * It is now possible to easily cross-compile the C library, building on one
1837 system a library to run on another machine and/or operating system. All
1838 you need to do is set the variable `HOST_CC' in `configparms' to the
1839 native compiler for programs to run on the machine you are building on (a
1840 few generator programs are used on Unix systems); set `CC' to the
1841 cross-compiler.
1843 * The new function `fexecve' (only implemented on the GNU system) executes
1844 a program file given a file descriptor already open on the file.
1845 \f
1846 Version 1.07
1848 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1849 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1851 * You can set the variable `libprefix' in `configparms' to specify a prefix
1852 to be prepended to installed library files; this makes it easy to install
1853 the GNU C library to be linked as `-lgnuc' or whatever.
1855 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1856 copies a limited number of characters from a string, and returns the
1857 address of the last character written.
1859 * You no longer need to check for whether the installed `stddef.h' is
1860 compatible with the GNU C library. configure now checks for you.
1862 * You can now define a per-stream `fileno' function to convert the
1863 stream's cookie into an integral file descriptor.
1865 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1866 allocates zero bytes of storage, and returns a unique pointer which
1867 you can pass to `realloc' or `free'. The behavior is undefined if
1868 you dereference this pointer.
1870 * The C library now runs on Sony NEWS m68k machines running either
1871 NewsOS 3 or NewsOS 4.
1873 * The new `syscall' function is a system-dependent primitive function
1874 for invoking system calls. It has the canonical behavior on Unix
1875 systems, including unreliable return values for some calls (such as
1876 `pipe', `fork' and `getppid').
1878 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1879 to `EAGAIN', which is the preferred name. On systems whose kernels
1880 use two distinct codes, the C library now translates EWOULDBLOCK to
1881 EAGAIN in every system call function.
1882 \f
1883 Version 1.06
1885 * The GNU C Library Reference Manual is now distributed with the library.
1886 `make dvi' will produce a DVI file of the printed manual.
1887 `make info' will produce Info files that you can read on line using C-h i
1888 in Emacs or the `info' program.
1889 Please send comments on the manual to bug-glibc-manual@gnu.org.
1891 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1893 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1895 * Jason Merrill has contributed a port to the Sequent Symmetry running
1896 Dynix version 3 (i386-sequent-dynix).
1898 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1899 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1901 * New function `memory_warnings' lets you arrange to get warnings when
1902 malloc is running out of memory to allocate, like Emacs gives you.
1904 * The C library now contains the relocating allocator used in Emacs 19 for
1905 its editing buffers. This allocator (ralloc) minimizes allocation
1906 overhead and fragmentation by moving allocated regions around whenever it
1907 needs to. You always refer to a ralloc'd region with a "handle" (a
1908 pointer to a pointer--an object of type `void **').
1910 * There is a new `printf' format: `%m' gives you the string corresponding
1911 to the error code in `errno'.
1913 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1914 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1915 pass, the `a' modifier says to fill in a `char **' you pass with a
1916 malloc'd string.
1918 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1919 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1920 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1922 * `mkstemp' is a traditional Unix function to atomically create and open a
1923 uniquely-named temporary file.
1924 \f
1925 Version 1.05
1927 * The standard location for the file that says what the local timezone is
1928 has changed again. It is now `/usr/local/etc/localtime' (or more
1929 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1931 * The distribution no longer contains any files with names longer than 14
1932 characters.
1934 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1935 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1937 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1938 \f
1939 Version 1.04
1941 * The configuration process has changed quite a bit. The `configure'
1942 script is now used just like the configuration scripts for other GNU
1943 packages. The `sysdeps' directory hierarchy is much rearranged.
1944 The file `INSTALL' explains the new scheme in detail.
1946 * The header files no longer need to be processed into ANSI C and
1947 traditional C versions. There is just one set of files to install, and
1948 it will work with ANSI or old C compilers (including `gcc -traditional').
1950 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1951 MIPS DECStation running Ultrix 4.
1953 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1954 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1955 made itself into a shared library.
1957 * Yet further improved support for the i386, running 4.3 BSD-like systems
1958 (such as Mach 3 with the Unix single-server), or System V.
1960 * New function `strncasecmp' to do case-insensitive string comparison
1961 with limited length.
1963 * New function `strsep' is a reentrant alternative to `strtok'.
1965 * New functions `scandir' and `alphasort' for searching directories.
1967 * New function `setenv' is a better interface to `putenv'.
1969 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1970 function for traversing a directory tree.
1972 * The GNU obstack package is now also part of the C library.
1973 The new function `open_obstack_stream' creates a stdio stream that
1974 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1975 formatted output directly to an obstack.
1977 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1978 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1980 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1982 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1983 things to your strings.
1985 * There are some new test programs: test-fseek, testmb, and testrand.
1987 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1988 These ports are not finished, but are a good starting place for really
1989 supporting those systems.
1991 * `/etc/localtime' is now the standard location for the file that says what
1992 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1993 This follows the general principle that `/etc' is the place for all local
1994 configuration files.
1996 * The C library header files now use `extern "C"' when used by the C++
1997 compiler, so the C library should now work with C++ code.
1999 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2000 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2001 in <strings.h>.)
2003 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2004 function which uses the `merge sort' algorithm, and is said to be
2005 significantly faster than the old GNU `qsort' function. Merge sort is
2006 now the standard `qsort' function. The new algorithm can require a lot
2007 of temporary storage; so, the old sorting function is called when the
2008 required storage is not available.
2010 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2011 provides the Unix `crypt' function, plus some other entry points.
2013 * The code and header files taken from 4.4 BSD have been updated with the
2014 latest files released from Berkeley.
2015 \f
2016 ----------------------------------------------------------------------
2017 Copyright information:
2019 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2021 Permission is granted to anyone to make or distribute verbatim copies
2022 of this document as received, in any medium, provided that the
2023 copyright notice and this permission notice are preserved,
2024 thus giving the recipient permission to redistribute in turn.
2026 Permission is granted to distribute modified versions
2027 of this document, or of portions of it,
2028 under the above conditions, provided also that they
2029 carry prominent notices stating who last changed them.
2030 \f
2031 Local variables:
2032 version-control: never
2033 fill-column: 76
2034 End: